Know your weaknesses
before attackers do.
Toolbox is built to make everyday IT work faster and simpler — whether you're hardening a firewall, auditing a domain, or just checking if DNS propagated. Offensive and defensive, networking and diagnostics, one toolkit. Self-hosted, privacy-first. No third-party dependencies. No data leaving your perimeter.
Precision-engineered utilities.
DNS Lookup
DNS record queries, propagation checks, reverse DNS, DNSSEC validation, and zone analysis.
Coming SoonEmail Security
SPF, DKIM, and DMARC record analysis. Verify email authentication, check domain reputation, and identify misconfigurations.
AvailableIP Intelligence
IP geolocation, ASN and ISP lookup, subnet calculator, and network topology insights for quick reconnaissance.
AvailableSpeed Test
Measure your internet performance — latency, download, and upload speed. See how fast your connection really is.
AvailablePort Scanner
Check if a port is open or closed on any host. TCP and UDP scanning with full audit logging.
AvailableMermaid Diagrams
Create flowcharts, sequence diagrams, Gantt charts and more with Markdown-like syntax. Live preview and SVG export.
AvailableCronguru
Build and decode cron expressions with live descriptions, and keep a history when signed in.
AvailableReady to explore.
Hosted in Germany. All tools run on our infrastructure — no setup required. Your input data is processed server-side and never shared.